1 /*
   2  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * JDK-8016681: regex capture behaves differently than on V8
  26  *
  27  * @test
  28  * @run
  29  */
  30 
  31 // regexp similar to the one used in marked.js
  32 /^((?:[^\n]+\n?(?!( *[-*_]){3,} *(?:\n+|$)| *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)|([^\n]+)\n *(=|-){3,} *\n*))+)\n*/
  33     .exec("a\n\nb")
  34     .forEach(function(e) { print(e); });
  35 
  36 // simplified regexp
  37 /(x(?!(a))(?!(b))y)/
  38     .exec("xy")
  39     .forEach(function(e) { print(e); });
  40 
  41 // should not match as cross-negative-lookeahead backreference \2 should be undefined
  42 print(/(x(?!(a))(?!(b)\2))/.exec("xbc"));